JP4014247B2 - Clamping device for tool slider in facing device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a facing device for performing a facing process and the like, and more particularly to a clamping device for clamping a tool slider on which a tool is mounted.
[0002]
[Prior art]
In a machine tool such as a boring machine or machining center that performs machining by rotating a tool mounted on the spindle, for example, when performing boring, different tools are required for each machining diameter.
In the machine tool, since the rotating tool cannot be moved in the radial direction, it is difficult to continuously cut the end surface perpendicular to the main axis.
[0003]
When performing these cutting processes, a facing machine is often used in which a facing device is attached to a rotationally driven main shaft. A tool slider is provided on the face plate of the facing device so as to be able to reciprocate in the radial direction of the face plate.
Then, the tool slider on which the tool is mounted is moved by a predetermined amount with respect to the face plate, thereby performing boring processing related to the above-mentioned arbitrary processing diameter, continuous cutting processing of the end surface perpendicular to the main shaft, and the like.
[0004]
By the way, when performing boring with a tool attached to the tool slider without clamping the tool slider moved to a predetermined machining position, vibration may occur during heavy cutting, and cutting may not be possible.
Japanese Utility Model Laid-Open No. 62-42901 discloses a surfacing device that supports a tool by a slider and fixes and positions the slider via a tool locking means for locking the tool to a spindle. That is, a pull stud is attached to the clamp member, and the slider is fixed / unfixed by engaging / disengaging the tool lock means.
However, in the technique described in Japanese Utility Model Publication No. 62-42901, the tool lock means is used for fixing the slider, so that automatic tool change by the automatic tool changer cannot be performed. It was not possible to realize automation and unmanned operation.
[0005]
[Problems to be solved by the invention]
Therefore, there is a need for a tool slider clamping device that can clamp the tool slider at an arbitrary position with respect to the face plate to increase the rigidity of the drive system of the tool slider during cutting.
Further, the facing device and the facing machine are also required to improve the cutting performance, to be automated and to be unmanned by adding an automatic tool change function and a tool slider clamp / unclamp function.
[0006]
Furthermore, when the entire clamping device for clamping the tool slider is attached to the face plate or the tool slider, the structure of the face plate and the tool slider that rotate is complicated and the weight thereof is increased. It also causes unbalance and is not preferable.
[0007]
The present invention has been made to solve such a problem, and provides a clamping device for a tool slider in a facing device that increases the rigidity of the facing device at the time of cutting to prevent vibrations and enables heavy cutting. The purpose is to provide.
Another object of the present invention is to enable automation and unmanning of a facing device by coexisting a tool slider clamping / unclamping operation and an automatic tool changing operation.
[0008]
[Means for Solving the Problems]
To achieve the above objective, Claim 1 A clamping device for a tool slider in a facing device according to the present invention is provided with a face plate attached to a spindle rotatably supported by a spindle support, and is movable in the radial direction of the spindle with respect to the face plate, and A tool slider on which the tool is mounted on the tool mounting section; ,in front Clamp mechanism provided on the face plate and pressing the sliding portion of the tool slider to clamp the tool slider at an arbitrary position When Have The clamp mechanism is provided on the face plate so as to be able to reciprocate in a direction parallel to the movement direction of the tool slider, and is operated by advancing and retreating movement of the operation drive device. An operation transmitting means for moving the moving member forward and backward in a direction orthogonal to the moving direction of the tool slider by operating the clamp rod to move forward and backward in the moving direction of the tool slider, and movably provided on the face plate, A clamp member that presses and clamps the sliding portion of the tool slider by the forward and backward movement of the moving member. ing.
[0009]
According to the invention of claim 2 The clamping device includes a face plate attached to a main shaft rotatably supported by a main shaft support, a tool that is provided so as to be movable in the radial direction of the main shaft with respect to the face plate, and a tool is mounted on a tool mounting portion. A clamping device in a facing device having a slider, This clamping device A clamp mechanism provided on the face plate that rotates, and capable of clamping the tool slider at an arbitrary position with respect to the face plate; and provided on the spindle support or a base that fixes the spindle support, and the clamp A tool slider clamp / unclamp operation drive device that operates the mechanism so that it can be switched between a clamped state and an unclamped state. The clamp mechanism is provided on the face plate so as to be able to reciprocate in a direction parallel to the moving direction of the tool slider, and is operated by advancing and retreating movement of the operating drive device. An operation transmitting means for moving the moving member forward and backward in a direction orthogonal to the moving direction of the tool slider by operating the clamp rod to move forward and backward in the moving direction of the tool slider, and movably provided on the face plate, A clamp member that presses and clamps the sliding portion of the tool slider by the forward and backward movement of the moving member. ing.
001 0 ]
The movement transmitting means includes an inclined member attached to the clamp rod and formed with an inclined surface inclined in the central axis direction of the clamp rod, one end surface slidingly contacts the inclined surface of the inclined member, and the other It is preferable that the end surface is provided with the moving member that moves the clamp member while abutting against one end of the clamp member.
001 1 ]
The tool slider clamping / unclamping drive device includes a clamping cylinder device and an unclamping cylinder device attached to the spindle support or the base body in the direction of the face plate, and the clamping cylinder device When the clamp rod is operated and pressed and moved in one direction, the clamp mechanism is brought into a clamped state, and when the unclamping cylinder device is operated and the clamp rod is pushed and moved in the other direction, the clamp mechanism Is preferably in an unclamped state.
001 2 ]
The clamping cylinder device and the unclamping cylinder device are mounted in parallel to each other, and when the face plate is positioned at a predetermined position for clamping, the clamping cylinder device is operated to press the clamping rod. When the clamp mechanism is in a clamped state and the face plate is positioned at a predetermined position for unclamping rotated 180 degrees from the predetermined position for clamping, the clamping mechanism is operated to press the clamp rod to press the clamping mechanism. Is preferably in an unclamped state.
001 3 ]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an exemplary embodiment of the present invention will be described with reference to FIGS.
FIG. 1 is a schematic configuration diagram of a facing device of a facing machine having a clamping device for a tool slider according to the present invention, and a part thereof is shown in cross section. FIG. 2 is a front view showing a part of the facing device, and FIG. 3 is a side view taken along line III-III in FIG.
4 is a partially enlarged front view of the facing device, FIG. 5 is an enlarged sectional view taken along line VV in FIG. 4, FIG. 6 is a sectional view taken along line VI-VI in FIG. 4, and FIG. It is sectional drawing which shows a clamp / unclamp mechanism.
001 4 ]
The facing machine of the present embodiment has almost the same configuration as a horizontal machining center or the like. In other words, a column is movably installed on the bed, a spindle head is movably attached to the column, and a table for placing a workpiece is movably provided on the bed.
Note that the present invention is not limited to this configuration, and it is only necessary that the spindle head that rotatably supports the spindle is a facing machine that can move in three axis directions relative to the table on which the workpiece is placed.
001 5 ]
As shown in FIGS. 1 to 3, a facing device 3 is attached to the main shaft 2 of the facing machine 1. The main shaft 2 is rotatably supported by a non-rotating portion such as a main shaft support 8 that forms the base of the main shaft head, and is rotated by a main motor (not shown).
In the facing device 3, the tool slider 5 on which the tool 4 is mounted is described in a diameter direction of the face plate 6 (in this embodiment, the U-axis direction) on a substantially circular face plate 6 attached to the main shaft 2. 2 (in the direction of arrow B in FIG. 2).
001 6 ]
While the tool 4 is mounted on the tool slider 5, the tool slider 5 moves in the U-axis direction, and the main shaft 2 rotates in the main shaft support 8 so that facing processing by the facing device 3 is performed.
In addition, the direction (for example, upper direction of FIG. 1) of the tool 4 mounted on the tool slider 5 will be described as the front.
001 7 ]
In the facing device 3, a tool mounting portion 5 a for mounting the tool 4 is provided at the front end portion of the tool slider 5.
A tool clamp / unclamp mechanism 9 for mounting and clamping / unclamping the tool holder (tool shank) of the tool 4 on the tool mounting portion 5a is disposed at the rear of the tool mounting portion 5a.
001 8 ]
As shown in FIG. 7, a tool mounting fluid pressure cylinder device 10 disposed at the rear part of the tool mounting portion 5a and a plurality of disc springs 11 (or coil springs or the like) as biasing members, 4 tool holders are detachably mounted on the tool mounting portion 5a.
A small-diameter portion 12 positioned behind the tool mounting portion 5a and communicating with the tool mounting portion 5a; and a large-diameter portion 13 positioned rearward of the small-diameter portion 12 and constituting the pressure chamber 15 of the fluid pressure cylinder device 10; Is formed in the tool slider 5.
In the large diameter portion 13, the piston 14 of the fluid pressure cylinder device 10 has a central axis C ₁ The piston 14 is fitted in such a manner that it can move forward and backward, and the rear side of the piston 14 is a pressure chamber 15 to which pressure fluid such as pressurized oil or compressed air is supplied.
00 19 ]
An engagement shaft 17 for engaging the tool holder of the tool 4 with the collet 16 is integrally attached to the center of the piston 14 toward the front. The piston 14 is constantly urged rearward by the strong urging force of the plurality of disc springs 11.
The piston 14 is urged rearward by the urging force of the disc spring 11, and the engagement shaft 17 pulls the pull stud 18 of the tool 4 rearward via the collet 16, whereby the tool holder is clamped to the tool mounting portion 5a. It has become so.
002 0 ]
The tool clamp / unclamp mechanism 9 performs a clamp / unclamp operation by the fluid pressure cylinder device 10 or the like.
In the case of the unclamping operation, the pressure fluid is supplied to the pressure chamber 15 of the fluid pressure cylinder device 10. Then, the piston 14 urged rearward by the disc spring 11 moves forward against the urging force of the disc spring 11.
The engaging shaft 17 integrated with the piston 14 is against the urging force of the disc spring 11 and the center axis C ₁ Since it moves forward in the direction, the tool clamp / unclamp mechanism 9 enters an unclamped state.
002 1 ]
On the other hand, in the case of the clamping operation, the pressure fluid is discharged from the pressure chamber 15. Then, the piston 14 is strongly pushed backward by the biasing force of the disc spring 11, so that the engagement shaft 17 also moves backward integrally with the piston 14. As a result, the tool clamp / unclamp mechanism 9 is in a clamped state.
Such a tool clamp / unclamp mechanism 9 is well known and will not be described in further detail. The collet-type tension mechanism type tool clamp / unclamp mechanism 9 is described, but a ball-type tension mechanism type may be used.
Therefore, the facing machine 1 capable of the above-described clamping / unclamping operation can perform an automatic tool changing operation by an automatic tool changing device (not shown).
002 2 ]
1 to 3, a feed shaft for reciprocating the tool slider 5 in the U-axis direction is disposed inside the main shaft 2. The feed shaft is inserted so as to be rotatable relative to the main shaft 2, and its operation is regulated so as not to move in the main shaft axis direction, and is driven to rotate by a servo motor.
The feed shaft rotates integrally with the main shaft 2 when the tool slider 5 is not moved, but rotates in the forward and reverse directions relative to the main shaft 2 when the tool slider 5 is moved in the U-axis direction.
002 3 ]
A guide portion 20 for movably guiding and holding the tool slider 5 is formed in a vertical direction in FIG. 2 on the surface (that is, the front surface) of the face plate 6 fixed to the front end portion of the main shaft 2. Has been.
The guide portion 20 of the face plate 6 is formed with a slide surface 22b on the rear side and slide surfaces 22a and 22c on both sides formed at right angles from both ends of the slide surface 22b. On the front side of 6, presser plates 20 a and 20 b are fixed with bolts.
The tool slider 5 has sliding portions 21a and 21b extending a predetermined length in the vertical direction in FIG. Since the sliding portions 21a and 21b are slidably fitted to the guide portion 20 and the holding plates 20a and 20b of the face plate 6, the tool slider 5 is moved in the direction of arrow B (U-axis direction) in FIG. Reciprocate freely.
002 4 ]
A screw shaft 24 that is orthogonal to the feed shaft and faces in the vertical direction in FIG. 2 is attached to the center of the front surface of the face plate 6. The screw shaft 24 is disposed inside the guide portion 20 and is rotatably supported on the face plate 6.
The feed shaft and the screw shaft 24 are connected by a bevel gear mechanism. When the feed shaft is rotationally driven relative to the main shaft 2 by the servo motor in the forward / reverse direction, the rotational force is transmitted to the screw shaft 24 via the bevel gear mechanism, and the screw shaft 24 is forward / reverse. Rotate in the direction.
Since the male screw formed on the screw shaft 24 is screwed into a nut 24a (see FIGS. 2 and 5) attached to the tool slider 5, when the screw shaft 24 rotates, the tool slider 5 disengages the nut 24a. Accordingly, it moves linearly in the vertical direction in FIG. 2, that is, in the U-axis direction.
002 5 ]
In order to balance the entire facing device 3 with the movement of the tool slider 5 in the U-axis direction, a balance weight 23 is fitted in the guide portion 25 (see FIGS. 2 and 5) so as to be reciprocally movable. Reference numeral 23 a is a presser plate fixed to the face plate 6.
The balance weight 23 is disposed to face the tool slider 5, and racks 91 and 93 respectively attached to the tool slider 5 and the balance weight 23 mesh with an intermediate gear 92 that is rotatably attached to the face plate 6.
002 6 ]
Therefore, when the screw shaft 24 rotates and the tool slider 5 moves, the balance weight 23 moves in synchronization with the reverse direction via the rack 91, the intermediate gear 92, and the rack 93. This is preferable because the entire rotational balance of the facing device 3 is kept good, but the balance weight 23 is not necessarily required as shown in FIG.
Lubricating oil is supplied from a lubricating device (not shown) to the sliding portion between the face plate 6 and the tool slider 5 and the sliding portion between the face plate 6 and the balance weight 23, so that the tool slider 5 and the balance weight 23 are smooth. It can be moved.
002 7 ]
The facing machine 1 includes a clamping device 30 that enables the tool slider 5 to be clamped at an arbitrary position with respect to the face plate 6.
The clamping device 30 is a clamping mechanism 31 provided on the face plate 6 of the facing device 3 that rotates, and capable of clamping the tool slider 5 with respect to the face plate 6 at an arbitrary position, and a non-rotating portion that rotatably supports the spindle 2. A tool slider clamping / unclamping drive device (hereinafter referred to as a drive device) 32 provided on a spindle support body 8 (or a base or the like on which the spindle support body 8 is fixed) is provided.
The drive device 32 is disposed in the vicinity of the face plate 6 so that the clamp mechanism 31 can be switched between the clamped state and the unclamped state.
002 8 ]
A clamp rod 36 a and a clamp rod 36 b (see FIGS. 2 and 6) of the clamp mechanism 31 are provided on the face plate 6. The clamp rods 36 a and 36 b are fitted in a through hole 50 having a circular cross section formed in the direction of the central axis D inside the face plate 6 so as to be reciprocally movable in the direction of the central axis D.
The clamp rods 36a and 36b operated by the forward / backward movement of the drive device 32 can be reciprocated in a direction parallel to the moving direction of the tool slider 5, and one end 33 and the other end 34 are simultaneously moved. Or it can protrude from the face plate 6 alternately.
The center axis D of the clamp rods 36a and 36b is parallel to the center line C of the guide portion 20 of the face plate 6 and is separated by a predetermined distance E.
00 29 ]
The clamp mechanism 31 includes operation transmission means 38. When the driving device 32 operates the end portion 33 or 34 of the clamp rods 36a and 36b to move the clamp rods 36a and 36b in the direction of the central axis D, the movement transmitting means 38 moves the clamp rods 36a and 36b. In conjunction with this, the moving member 37 is moved back and forth in a direction orthogonal to the moving direction of the tool slider 5.
Further, the clamp mechanism 31 includes a clamp lever 39 as a clamp member. The clamp lever 39 is movably supported by the face plate 6 so as to swing as indicated by an arrow H in conjunction with the forward / backward movement operation of the moving member 37.
The swinging clamp lever 39 presses the sliding portion 21b of the tool slider 5 against the sliding surface 22b of the face plate 6, whereby the tool slider 5 is clamped.
003 0 ]
The sliding portions 21 a and 21 b of the tool slider 5 are formed long in a direction parallel to the central axis D over the reciprocating movement stroke of the tool slider 5.
No matter where the tool slider 5 moves in the U-axis direction, the sliding surface 22b of the face plate 6 and the sliding portion 21b of the tool slider 5 are always in contact with each other at the position where the clamp lever 39 is disposed. As shown, the lengths of the sliding portions 21a, 21b and the sliding surfaces 22a, 22b, 22c are determined.
Therefore, the clamp lever 39 can press the sliding portion 21b against the sliding surface 22b regardless of the position of the tool slider 5. Therefore, the tool slider 5 is clamped at an arbitrary position by the clamping device 30. The
003 1 ]
As shown in FIGS. 4 to 6, the motion transmitting means 38 is provided so as to be sandwiched between the clamp rods 36 a and 36 b, and is provided with an inclined surface 40 that is inclined in the direction of the central axis D of the clamp rods 36 a and 36 b. A member 41 and a moving member 37 that moves the clamp lever 39 with one end surface 42 in sliding contact with the inclined surface 40 of the inclined member 41 and the other end surface 43 in contact with one end 44 of the clamp lever 39 are provided. . The moving member 37 is reciprocally movable in the arrow J direction and in the opposite direction.
003 2 ]
A substantially central portion in the longitudinal direction of the through hole 50 formed inside the face plate 6 is a large-diameter hole portion 51 having a circular cross section having a diameter larger than that of other portions and having a predetermined dimension F in the longitudinal direction.
The inclined member 41 having a circular cross section is fixed to substantially the center of the clamp rods 36a and 36b, and is fitted in the large-diameter hole 51 so as to be reciprocally movable. The inclined member 41 is formed with an inclined surface 40 in which a part of the outer peripheral surface is obliquely processed into a flat shape.
On the outer peripheral surface of the inclined member 41, a concave portion 52 having a predetermined dimension long in a direction parallel to the central axis D is formed. A distal end portion of a locking piece 53 attached to the face plate 6 for preventing rotation is engaged in the recess 52 so as to be relatively movable. As a result, the inclined member 41 in the large-diameter hole 51 is reciprocated while being restricted from rotating in the rotational direction.
003 3 ]
A fitting hole 54 communicating with the large-diameter hole 51 is formed inside the face plate 6 and the holding plate 20a, and a moving member 37 is movably fitted in the fitting hole 54. The center axis G of the fitting hole 54 faces the direction orthogonal to the center axis D of the clamp rods 36 a and 36 b and orthogonal to the front side plane of the face plate 6.
An oblong oblong hole 55 that is long in the direction of the central axis G is formed on the side surface of the moving member 37. Since the distal end portion of the locking piece 57 attached to the presser plate 20a is engaged with the elongated hole 55 so as to be relatively movable, the moving member 37 reciprocates with a predetermined stroke in the central axis G direction and rotates. It is regulated not to exercise.
003 4 ]
A space 58 communicating with the fitting hole 54 is formed inside the presser plate 20a. A clamp lever 39 is fitted inside the space 58 so as to be swingable only along a plane perpendicular to the central axis D of the clamp rods 36a and 36b, as shown by an arrow H (FIG. 1). Yes.
A protrusion 59 is integrally formed at the center of the clamp lever 39 so as to protrude. The protrusion 59 can be brought into contact with the inner surface of the lid member 60 of the presser plate 20a so as to be a fulcrum when the clamp lever 39 swings.
003 5 ]
One end 44 of the clamp lever 39 contacts the end surface 43 of the moving member 37. The clamp lever 39 includes a pressing portion 61 on the opposite side of the one end portion 44 with the protrusion 59 interposed therebetween. The pressing part 61 can press the one surface 62 of the sliding part 21b of the tool slider 5 via the contact plate 21c.
When the clamp lever 39 swings in one direction (for example, counterclockwise in FIG. 5) with the protrusion 59 as a fulcrum, the sliding portion 21b is pressed against the sliding surface 22b of the face plate 6.
003 6 ]
One clamp rod 36a is integrally formed with a small-diameter portion 68 having a predetermined length smaller in diameter than other portions. A pin 69 for restricting stroke operation attached to the face plate 6 is engaged with the small diameter portion 68 so as to be relatively movable.
Thus, the stroke operation of the clamp rods 36a and 36b is restricted, and the clamp rods 36a and 36b are prevented from coming out of the through hole 50 outward.
003 7 ]
As shown in FIGS. 2 to 4, the driving device 32 includes a driving device base 32 a fixed to the main shaft support 8 and a non-rotating portion, that is, the main shaft support 8 (or main shaft support) toward the face plate 6. A clamping cylinder device 80 and an unclamping cylinder device 81 which are attached to the drive device base 32a in parallel with each other, and a clamping pressing member 82 and an unclamping pressing member 83 which are parallel to each other. It has.
The cover member 32b attached to the spindle support 8 covers the clamping cylinder device 80, the unclamping cylinder device 81, the clamping pressing member 82, and the unclamping pressing member 83.
The clamping pressing member 82 is connected to the clamping cylinder device 80 via the connecting member 84, and the unclamping pressing member 83 is connected to the unclamping cylinder device 81 via the connecting member 85.
003 8 ]
Both pressing members 82 and 83 are driven by both cylinder devices 80 and 81 to move forward and backward, respectively, so that one end 33 and the other end of the clamp rods 36a and 36b protruding from the face plate 6 are provided. The clamp rods 36a and 36b are moved in the direction of the central axis D by pushing 34 respectively.
When the face plate 6 is positioned at the predetermined position for clamping, the center axis D of the clamp rods 36a and 36b is the center axis H of the pressing member 82 for clamping. ₁ Matches.
On the other hand, when the face plate 6 is positioned at the predetermined position for unclamping rotated 180 degrees from the predetermined position for clamping, the central axis D of the clamp rods 36a, 36b is the central axis H of the pressing member 83 for unclamping. ₂ To match.
00 39 ]
In the clamping state, the face plate 6 is moved to a predetermined position for clamping (for example, a face plate 0 degree positioning position (upright position) so that one end 33 of the clamp rods 36a and 36b faces the pressing member 82 for clamping. ).
Next, driven by the clamping cylinder device 80, the clamping pressing member 82 forcibly pushes one end 33 of the protruding state of the clamp rods 36a and 36b via the connecting member 84 to press and move in one direction. Then, the clamp mechanism 31 is in a clamped state.
004 0 ]
In order to change from the clamped state to the unclamped state, the unclamp is obtained by rotating the face plate 6 180 degrees from the predetermined position for clamping so that the other end 34 of the clamp rods 36a and 36b faces the unclamping pressing member 83. It is positioned at a predetermined position (for example, a face plate 180-degree positioning position (inverted position)).
Next, driven by the unclamping cylinder device 81, the unclamping pressing member 83 forcibly pushes the other end portion 34 of the clamp rods 36a and 36b through the connecting member 85 and presses it in the other direction. When moved, the clamp mechanism 31 changes from the clamped state to the unclamped state.
004 1 ]
Next, the operation of the clamping device 30 in the facing device 3 of the facing machine 1 according to the present invention will be described with reference to FIGS.
For example, when cutting without moving the tool slider 5 in the U-axis direction, such as when performing boring or milling, the tool slider 5 needs to be clamped by the clamp device 30.
004 2 ]
Initially, when the clamping device 30 is in the unclamped state, an operation of changing the unclamped state to the clamped state is performed before starting the machining. First, the face plate 6 is rotated and positioned at a predetermined clamping position so that the center axis D of the clamp rods 36a and 36b is located on the left side of FIG.
At the predetermined clamping position, the center axis D of the clamping rods 36a and 36b coincides with the clamping pressing member 82, so that one end 33 of the clamping rods 36a and 36b faces the clamping pressing member 82.
004 3 ]
Next, the clamping cylinder device 80 is driven to advance the clamping pressing member 82, so that one end 33 is pushed to a predetermined pressing force P. ₁ The clamp rods 36a and 36b are moved forward by forcibly pushing with (FIG. 6).
Then, the inclined surface 40 of the inclined member 41 moves forward while sliding on one end surface 42 of the moving member 37. Thereby, the moving member 37 moves to the clamp lever 39 side as shown by an arrow J (FIG. 6).
004 4 ]
When the one end 44 of the clamp lever 39 is pushed by the moving member 37, the clamp lever 39 swings counterclockwise in FIG. 5 with the protrusion 59 as a fulcrum in conjunction with the moving operation of the moving member 37.
As a result, the pressing portion 61 of the clamp lever 39 presses the sliding portion 21b of the tool slider 5 through the contact plate 21c. Therefore, the sliding portion 21 b is strongly pressed against the sliding surface 22 b of the face plate 6 and a large frictional resistance is generated, so that the tool slider 5 is clamped against the face plate 6. This clamping force is held by a frictional force between the inclined surface 40 and one end surface 42 of the moving member 37.
004 5 ]
Next, the clamping cylinder device 80 is driven in the reverse direction to retract the clamping pressing member 82.
Thus, if the main shaft 2 is rotated in a state where the tool slider 5 is clamped to the face plate 6 by the clamping device 30, the face plate 6 and the tool slider 5 rotate integrally. Then, the tool 4 and the workpiece are relatively moved, and the tool 4 performs cutting such as boring on the workpiece.
004 6 ]
Next, when the tool slider 5 is moved in the U-axis direction or when facing processing is performed while moving the tool slider 5, it is necessary to perform an operation for changing the tool slider 5 from the clamped state to the unclamped state. .
In this case, the rotation of the main shaft 2 is once stopped. Next, the face plate 6 is positioned at a predetermined position for unclamping rotated 180 degrees from the predetermined position for clamping. That is, the face plate 6 is positioned by turning 180 degrees so that the center axis D of the clamp rods 36a and 36b is on the right side of FIG.
004 7 ]
Then, since the central axis D of the clamp rods 36a and 36b coincides with the unclamping pressing member 83, the other end 34 of the clamping rods 36a and 36b faces the unclamping pressing member 83.
In this state, the unclamping cylinder device 81 is driven to advance the unclamping pressing member 83 so that the clamp rods 36a and 36b are pressed to a predetermined pressing force P. ₂ Forcibly push in (FIG. 6) and move backward by a predetermined stroke.
004 8 ]
When the inclined member 41 moves backward together with the clamp rods 36a and 36b, the moving member 37 moves in the direction opposite to the arrow J in conjunction with the moving operation of the inclined member 41. The clamp lever 39 swings in the clockwise direction of FIG. 5 with the protrusion 59 as a fulcrum in conjunction with the movement of the moving member 37, so that the pressing operation to the sliding portion 21b by the pressing portion 61 is released.
As a result, the clamping device 30 changes from the clamped state to the unclamped state, and the sliding portion 21b of the tool slider 5 becomes slidable with respect to the sliding surface 22b of the face plate 6.
00 49 ]
Next, the unclamping cylinder device 81 is driven in the reverse direction to retract the unclamping pressing member 83.
These face plate positioning command, clamping operation command, and unclamping operation command can be commanded by an auxiliary function or the like of the NC device (for example, M code command, G code command, etc.). If the facing machine 1 is controlled by the NC device, a series of clamping and unclamping operations can be commanded in the NC program.
In the present embodiment, the clamp lever 39 is used as a clamp member, and the tool slider 5 is clamped by swinging the clamp lever 39. However, the tool slider 5 may be clamped by linearly moving the clamp member by tilting. .
005 0 ]
As described above, since the tool slider 5 is clamped between the clamping mechanism 31 and the face plate 6 with a strong force during clamping, the tool slider 5 is clamped with a large frictional resistance against the face plate 6.
Therefore, if the tool slider 5 is clamped by the clamp device 30 and cutting is performed, the tool slider 5 is not supported by the drive system of the tool slider 5, but is clamped by the clamping force of the clamp device 30 and face plate. Since 6 and the tool slider 5 are integrated, rigidity is improved.
As a result, the facing device 3 is not vibrated by the cutting force during the cutting process, and a heavy cutting process is possible.
005 1 ]
In the present invention, only the minimum clamping mechanism 31 is provided in the facing device 3 that rotates, and the operation drive device 32 for operating the clamping mechanism 31 is provided on the non-rotating portion side.
Therefore, the facing device 3 does not need to be provided with a driving portion for clamping, an operation mechanism, etc., so the rotating-side clamp mechanism 31 has a light weight, simple and compact configuration, and balance of the facing device 3 at the time of rotation. There is no adverse effect.
Further, by operating the drive device 32 on the non-rotating part side, the tool slider 5 can be easily and safely switched to the clamped state or the unclamped state for cutting.
005 2 ]
Furthermore, the clamping device 30 for clamping the tool slider 5 and the tool clamping / unclamping mechanism 9 for clamping by clamping the tool holder of the tool 4 to the tool mounting portion 5a can coexist, so that the tool slider clamping / unclamping operation is possible. And the automatic tool change operation can coexist, and the facing device 3 and the facing machine 1 can be automated and unmanned.
005 3 ]
In this embodiment, the clamp mechanism is provided on one sliding portion, but the clamping mechanism may be provided on both sliding portions. In this case, the tool slider clamping / unclamping operation is simultaneously performed by both the operation driving devices.
In this embodiment, the guide surface of the tool slider and the face plate constitutes a slide guide surface, and the clamp mechanism presses the sliding portion of the tool slider to clamp the tool slider at an arbitrary position with respect to the face plate. However, the guide surfaces of the tool slider and the face plate may be rolling guide surfaces. In this case, the clamp mechanism may press the sliding portion of the tool slider, for example, the vicinity of the rolling guide surface, and clamp the tool slider at an arbitrary position with respect to the face plate.
In the drawings, the same reference numerals indicate the same or corresponding parts.
005 4 ]
【The invention's effect】
According to claim 1 Since the present invention is configured as described above, when cutting by cutting the tool slider, the rigidity of the tool slider drive system can be increased to prevent the vibration, thereby enabling heavy cutting. As a result, the processing capability of the facing device is improved.
Also, Since the present invention according to claim 2 is configured as described above, Tool slider clamping / unclamping operation and automatic tool change operation can coexist, and the facing device can be automated and unmanned.
[Brief description of the drawings]
1 to 7 are diagrams showing an example of an embodiment of the present invention, and FIG. 1 is a schematic configuration diagram of a facing device of a facing machine having a clamp device for a tool slider.
FIG. 2 is a front view showing a part of the facing device.
FIG. 3 is a side view taken along line III-III in FIG. 2;
FIG. 4 is a partially enlarged front view of the facing device.
FIG. 5 is an enlarged cross-sectional view taken along line VV in FIG. 4;
6 is a cross-sectional view taken along line VI-VI in FIG.
FIG. 7 is a cross-sectional view showing a tool clamp / unclamp mechanism provided on the tool slider.
[Explanation of symbols]
2 Spindle
3 Facing device
4 tools
5 Tool slider
5a Tool mounting part
6 faceplate
8 Spindle support
21b Sliding part
30 Clamping device
31 Clamp mechanism
32 Tool slider clamp / unclamp drive
36a, 36b Clamp rod
37 Moving member
38 Motion transmission means
39 Clamp lever (Clamp member)
40 Inclined surface
41 Inclined member
42 One end face of the moving member
43 The other end face of the moving member
44 One end of clamp lever
80 Clamping cylinder device
81 Cylinder device for unclamping
D Center axis of clamp rod

Claims (5)

A face plate attached to the main shaft rotatably supported by the main shaft support;
A tool slider provided so as to be movable in the radial direction of the main shaft with respect to the face plate, and having a tool mounted on the tool mounting portion ;
Provided in front Symbol faceplate, it has a clamp mechanism for clamping in any position of the tool slide to press the slide portion of the tool slide,
This clamping mechanism
A clamp rod which is provided on the face plate so as to be reciprocally movable in a direction parallel to the movement direction of the tool slider, and is operated by advancing and retreating of the operation drive device;
An operation transmitting means for moving the moving member forward and backward in a direction orthogonal to the moving direction of the tool slider by operating the clamp rod to move the operating rod forward and backward in the moving direction of the tool slider;
A clamping device for a tool slider in a facing device , comprising: a clamping member that is movably provided on the face plate and that clamps the sliding portion of the tool slider by pressing the sliding movement of the moving member . A face plate attached to the main shaft rotatably supported by the main shaft support;
A clamping device in a facing device having a tool slider that is provided so as to be movable in the radial direction of the main shaft with respect to the face plate, and in which a tool is mounted on a tool mounting portion,
This clamping device
A clamping mechanism which is provided on the face plate that rotates and can clamp the tool slider at an arbitrary position with respect to the face plate;
Tool slider clamping / unclamping drive device which is provided on the spindle support or a base to which the spindle support is fixed, and which operates the clamp mechanism so that it can be switched between a clamped state and an unclamped state. equipped with a door,
The clamping mechanism is
A clamp rod which is provided on the face plate so as to be reciprocally movable in a direction parallel to the movement direction of the tool slider, and is operated by advancing and retreating of the operation drive device;
An operation transmitting means for moving the moving member forward and backward in a direction orthogonal to the moving direction of the tool slider by operating the clamp rod to move the operating rod forward and backward in the moving direction of the tool slider;
A clamping device for a tool slider in a facing device , comprising: a clamping member that is movably provided on the face plate and that clamps the sliding portion of the tool slider by pressing the sliding movement of the moving member . The motion transmission means is
An inclined member attached to the clamp rod and formed with an inclined surface inclined in the direction of the central axis of the clamp rod;
One end face in sliding contact with the inclined surface of the inclined member, according to claim 1 in which the other end face, characterized in that a said moving member for moving the clamping member abuts the one end of the clamping member Or the clamping apparatus of the tool slider in the facing apparatus of 2 . The tool slider clamp / unclamp driving device is:
A clamping cylinder device and an unclamping cylinder device attached to the spindle support or the base body in the direction of the face plate;
When the clamp cylinder device is operated and the clamp rod is pressed and moved in one direction, the clamp mechanism is in a clamped state,
3. The clamp of the tool slider in the facing device according to claim 2, wherein when the unclamping cylinder device is operated and the clamp rod is pressed and moved in the other direction, the clamping mechanism is brought into an unclamped state. apparatus. The clamping cylinder device and the unclamping cylinder device are mounted in parallel to each other,
When the face plate is positioned at a predetermined position for clamping, the clamping cylinder device is operated to press the clamping rod to bring the clamping mechanism into a clamping state.
When the face plate is positioned at a predetermined position for unclamping that is rotated 180 degrees from the predetermined position for clamping, the clamp mechanism is pressed by the cylinder device for unclamping to bring the clamping mechanism into an unclamped state. The clamping device of the tool slider in the facing apparatus of Claim 4 characterized by these.

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